diff --git a/Runtime/Component/Axis/AxisHandler.cs b/Runtime/Component/Axis/AxisHandler.cs
index 7129ea9e..f77f51b9 100644
--- a/Runtime/Component/Axis/AxisHandler.cs
+++ b/Runtime/Component/Axis/AxisHandler.cs
@@ -150,7 +150,7 @@ namespace XCharts
                 axis.context.minValue = 0;
                 axis.context.maxValue = axis.data.Count > 0 ? axis.data.Count - 1 : SeriesHelper.GetMaxSerieDataCount(chart.series) - 1;
                 axis.context.minMaxRange = axis.context.maxValue;
-                if (chart.HasRealtimeSortSerie())
+                if (chart.HasRealtimeSortSerie(axis.gridIndex))
                 {
                     UpdateAxisLabelText(axis);
                 }
@@ -478,7 +478,7 @@ namespace XCharts
             if (axis.IsCategory() && axis.boundaryGap)
                 splitNumber -= 1;
             axis.context.aligment = defaultAlignment;
-            var sortSerie = chart.GetRealtimeSortSerie();
+            var sortSerie = chart.GetRealtimeSortSerie(axis.gridIndex);
             if (sortSerie != null)
             {
                 SerieHelper.UpdateSerieRuntimeFilterData(sortSerie);
@@ -598,7 +598,7 @@ namespace XCharts
             if (axis.IsCategory() && axis.boundaryGap)
                 splitNumber -= 1;
             axis.context.aligment = defaultAlignment;
-            var sortSerie = chart.GetRealtimeSortSerie();
+            var sortSerie = chart.GetRealtimeSortSerie(axis.gridIndex);
             if (sortSerie != null)
             {
                 SerieHelper.UpdateSerieRuntimeFilterData(sortSerie);
diff --git a/Runtime/Component/Axis/AxisHelper.cs b/Runtime/Component/Axis/AxisHelper.cs
index 7c294b7f..03fe5fdb 100644
--- a/Runtime/Component/Axis/AxisHelper.cs
+++ b/Runtime/Component/Axis/AxisHelper.cs
@@ -119,7 +119,7 @@ namespace XCharts.Runtime
             DataZoom dataZoom, bool forcePercent, int sortIndex = -1)
         {
             int split = GetSplitNumber(axis, coordinateWidth, dataZoom);
-            if(sortIndex == -1) sortIndex = index;
+            if (sortIndex == -1) sortIndex = index;
             if (axis.type == Axis.AxisType.Value)
             {
                 if (minValue == 0 && maxValue == 0)
diff --git a/Runtime/Internal/BaseChart.Serie.cs b/Runtime/Internal/BaseChart.Serie.cs
index 86412ddc..4063d5fe 100644
--- a/Runtime/Internal/BaseChart.Serie.cs
+++ b/Runtime/Internal/BaseChart.Serie.cs
@@ -101,20 +101,22 @@ namespace XCharts.Runtime
             return false;
         }
 
-        public bool HasRealtimeSortSerie()
+        public bool HasRealtimeSortSerie(int gridIndex)
         {
             foreach (var serie in m_Series)
             {
+                if (!CheckSerieGridIndex(serie, gridIndex)) continue;
                 if (serie.useSortData)
                     return true;
             }
             return false;
         }
 
-        public Serie GetRealtimeSortSerie()
+        public Serie GetRealtimeSortSerie(int gridIndex)
         {
             foreach (var serie in m_Series)
             {
+                if (!CheckSerieGridIndex(serie, gridIndex)) continue;
                 if (serie.useSortData)
                     return serie;
             }